Not if you remove his art work. I'd keep the signature right where it is and make sure to hand the guitar down to him someday. I'd also have a picture taken now of you and him with the guitar to pass along someday as well.

Tom

Ditto! And amend your will to make sure he gets the guitar and the pic should you be called away.

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Dogs prefer finger-pickers over flat-pickers 35-to-1 because we give the very best back scratches!